.header{
  background-color: #3F51B5;
  box-shadow: 0 1px 2px 0px #000;
  color: #fff;
  padding: 0 20px;
  .top{
    height: 40px;
    line-height: 40px;
    .go-back{
      float: left;
    }
  }
  .link{
    display: flex;
    height: 50px;
    font-size: 12px;
    a{
      flex: 1;
      //display: inline-block;
      text-align: center;
      line-height: 50px;
      color: rgba(255,255,255,0.7);
      &.active{
        color: rgba(255,255,255,1);
        border-bottom: 1px solid #fff;
      }
    }
  }
}